Antivibration device for vehicles.



' w; A. PENHBLDL ANTIVIBBATION DEVICE FOR VEHICLES. APPLICATION FILED P123. 4-, 1909. I

924,825. Patented June l 5,- 1909.

' i the inner wall of the chamber.

- moved, the arms being 5. This may be formed in a UNITED. STATES PATENT OFFICE.

WILLIAM KI'L'LEN PENFIELD, or MERLDEX, CONNECTICUT a'AN'IIVIBRATIQN DEVICE FOR VEHICLES.

Specification of Letters Patent Patented. June 15, 1909.

Application filed February 4, 1909. Serial No. 476,120.

to be a full, clear, .and exact description of, the same, and whlch'said drawings constitutepart of this specification, and represent, 1n

Figure 1 a plan .view'of an anti-vibration device constmcted'in accordance with my invention." Fig. 2 a to or plan view of the same with one of the 'p ates and Washers rebroken away. Fig. 3a transverse sectiona view on an enlarged scale.

This invention relates to an improvement in anti-vibrationdevmes for vehicles, that 1s, a device particularly adapted torautomotiles and connected with the body and with the axle so as to absorb or prevent the shock which takes place when running over an uneven road, and prevents the sudden move-- ment of the body with relation to the axle and so as to not only make the vehicle ride more comfortably but diminishes the strain upon the springs.

The object of the invention is a simple arrangement of parts for this purpose and consists in the construction hereinafter described and particularly recited in the claims. Y

In carrying out my lnvention I employ a circular head 2 formed integral with or attached to an arm 3 which is adapted to be connected with the body of the vehicle or with the axle in the usual manner of devices ior this purpose. Within this head is a. circular block 4 preferably formed from felt, and between this block and the inner wall of the head is an annular friction ring single piece and extend substantially around the chamber, or it may be formed in two parts as shown in Fig. 2 of the drawings, thepart 6 which is substantially semicircular being formed with ears 7 at 1ts ends to enter notches 8 m 011 the opposite side of the semi-circular ring 9. The head is also formed with a hub 10 threaded to receive a screw 1-1 which bears against the clamping ring and radially compresses the felt block so asto increase the trict-ioinbetween the block and the ring. On opposite sides of the block are retaining washers 12 and 13', and outside these washers are plates 14,. 15, which are formed with arms 16, 17 which are connected with the body or with the axle. are connected together by The plates 14, 15, bolts 18 which also rigidly secure the block to the plates so that the rotation of the plates rotates also the block,.thereby producing vfrictional engagement between the ring an the periphery of the block, and it Wlll be noted thatthe washers and plates are not in contact with the head, consequently there is no frictional engagement between them. Turning the screw 11' increases or diminishes the friction-between the block and the ring. The arms; 16, 17, being connected to one part, and the arm 3 to the other part, when the body moves with relation to the axle these arms will be turned and the friction ring within said head, a block in said ring,-

plates on opposite sides of said head, said lates connected together and with said block, and means for radial-1y. compressing said block.

3. An anti-vibration device for vehicles comprising a chambered head, an arm formed therewith, a compression ring within said headfa'block' within said ring, plates on opposite sides of said head, said plates connected together and with said block, and means for radially compressing said ring, substantially as described.

4. An anti-vibration device for vehicles comprising a'chainb'ered head formed with anarm, a ring within said head, a felt block block is a corresponding 5 block, a screw mounted in said head and;

Within said ring, washer cn ofpposite sides of; In testimony whereof, I have signed this said block, plates outside 0 saidwashers, specification in the presence of two subsaidplates formed with arms, said plates and scribing witnesses. washers connected together and with said,

' WILLIAM ALLEN PENFIELD; v \Vitnesses ada' ted to contract said ring, substantigllyi W. E. HAMMOND,

as escribed. WM. L. PENFIELD. 

